CSS background images

I’m about to attemt to create a full browser width header using a child of the ‘twentyten’ theme. I had some trouble with making custom page templates in the beginning, inserting images into HTML on the page. Then I learned with wordpress you have to upload to the database and use bloginfo() to point to the image. Is the case the same with CSS divs?…or should it look similar to this method:

background-image:url(../images/images/sunriseSlices2_01.png);

and I should FTP the file to a folder in my child theme?

Thanks,
Mike